EP 0042041 B1 19831214 - PROCESS FOR WASHING H2S OUT OF A COKE-OVEN GAS
Title (en)
PROCESS FOR WASHING H2S OUT OF A COKE-OVEN GAS
Publication
Application
Priority
DE 3022180 A 19800613
Abstract (en)
[origin: US4342731A] An improved sulfur-ammonia process for removing hydrogen sulfide from coke oven gases. In the improved process, a concentrator formerly used for standby operation is used at all normal times as an ammonia scrubber to improve the efficiency of gas separation during normal operation and is used as a concentrator for its intended standby functions during the alternative operations. In its normal function, the concentrator/scrubber functions as a scrubber to strip ammonia gas from recirculating liquid streams and to permit introduction of an ammonia-rich gas into a hydrogen sulfide scrubber to increase the separation efficiency of that unit. In the standby operation, the same concentrator/scrubber serves as a concentrator to concentrate hydrogen sulfide in a "strong liquor" stream for separate recovery as a "strong liquor.
IPC 1-7
IPC 8 full level
B01D 53/52 (2006.01); B01D 53/14 (2006.01); B01D 53/77 (2006.01); C01B 17/16 (2006.01); C01C 1/12 (2006.01); C10K 1/12 (2006.01)
CPC (source: EP US)
B01D 53/1468 (2013.01 - EP US); C01B 17/167 (2013.01 - EP US); C01C 1/12 (2013.01 - EP US); C10K 1/12 (2013.01 - EP US); C10K 1/121 (2013.01 - EP US)
Designated contracting state (EPC)
BE FR GB IT LU NL
DOCDB simple family (publication)
EP 0042041 A2 19811223; EP 0042041 A3 19820324; EP 0042041 B1 19831214; CA 1151399 A 19830809; DE 3022180 A1 19811224; IN 153317 B 19840630; JP S5714693 A 19820125; US 4342731 A 19820803
DOCDB simple family (application)
EP 81102406 A 19810331; CA 374576 A 19810403; DE 3022180 A 19800613; IN 160CA1981 A 19810212; JP 15238780 A 19801031; US 25357981 A 19810413